220312213 has 8 divisors (see below), whose sum is σ = 241731936. Its totient is φ = 199124400.

The previous prime is 220312187. The next prime is 220312237. The reversal of 220312213 is 312213022.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-220312213 is a prime.

It is a super-4 number, since 4×220312213⁴ (a number of 34 digits) contains 4444 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220312243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 55983 + ... + 59788.

It is an arithmetic number, because the mean of its divisors is an integer number (30216492).

Almost surely, 2^220312213 is an apocalyptic number.

It is an amenable number.

220312213 is a deficient number, since it is larger than the sum of its proper divisors (21419723).

220312213 is a wasteful number, since it uses less digits than its factorization.

220312213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115955.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 220312213 is about 14842.9179408902. The cubic root of 220312213 is about 603.9665100286.

Adding to 220312213 its reverse (312213022), we get a palindrome (532525235).

The spelling of 220312213 in words is "two hundred twenty million, three hundred twelve thousand, two hundred thirteen".